What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
(-23) Pilot reported that while in the run-up area prior to takeoff, he was waiting for the oil temperature to come up. He was adjusting the throttle and experienced a surge in power and it pulled the nose over, shredding the propeller. He called for a tow and returned to the hangar. This was intended to be the first test flight after high-speed taxi tests of an experimental aircraft built by the pilot. After the incident the elevator was rigged to allow more elevator up travel in accordance with the kit's manual.
As the FAA filed it
(-23) PILOT REPORTED THAT WHILE IN THE RUN-UP AREA PRIOR TO TAKEOFF, HE WAS WAITING FOR THE OIL TEMPERATURE TO COME UP. HE WAS ADJUSTING THE THROTTLE AND EXPERIENCED A SURGE IN POWER AND IT PULLED THE NOSE OVER, SHREDDING THE PROPELLER. HE CALLED FOR A TOW AND RETURNED TO THE HANGAR. THIS WAS INTENDED TO BE THE FIRST TEST FLIGHT AFTER HIGH-SPEED TAXI TESTS OF AN EXPERIMENTAL AIRCRAFT BUILT BY THE PILOT. AFTER THE INCIDENT THE ELEVATOR WAS RIGGED TO ALLOW MORE ELEVATOR UP TRAVEL IN ACCORDANCE WITH THE KIT'S MANUAL.